#include "PWM.h"

void PWM_Init(void){
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE  );
	
	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_Init(GPIOA,&GPIO_InitStructure);
	
	
	
	TIM_InternalClockConfig(TIM2);
	
	TIM_TimeBaseInitTypeDef TIM_TimeBseInitStructure;
	TIM_TimeBseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
	TIM_TimeBseInitStructure.TIM_CounterMode=TIM_CounterMode_Up;
	TIM_TimeBseInitStructure.TIM_Period=100-1;
	TIM_TimeBseInitStructure.TIM_Prescaler=720-1;
	TIM_TimeBseInitStructure.TIM_RepetitionCounter=0;
	
	TIM_TimeBaseInit(TIM2,&TIM_TimeBseInitStructure);
	
	TIM_OCInitTypeDef TIM_OCInitStructure;
	TIM_OCStructInit(&TIM_OCInitStructure);

	TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
	TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
	TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
	TIM_OCInitStructure.TIM_Pulse=0;  //CCR
	
	TIM_OC1Init(TIM2,&TIM_OCInitStructure);

	TIM_Cmd(TIM2,ENABLE);
}

void PWM_SetComparel(uint16_t Compare){
	TIM_SetCompare1(TIM2,Compare);
}



